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Synchronization of Multiple Coupled rf-SQUID Flux Qubits

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arxiv 0903.1884 v1 pith:FWBUQWEQ submitted 2009-03-11 cond-mat.mes-hall

Synchronization of Multiple Coupled rf-SQUID Flux Qubits

R. Harris , F. Brito , A.J. Berkley , J. Johansson , M.W. Johnson , T. Lanting , P. Bunyk , E. Ladizinsky
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B. Bumble A. Fung A. Kaul A. Kleinsasser S. Han
This is my paper
classification cond-mat.mes-hall
keywords qubitcurrentfluxqubitsrf-squidstrategysynchronizationadiabatic
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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abstract

A practical strategy for synchronizing the properties of compound Josephson junction rf-SQUID qubits on a multiqubit chip has been demonstrated. The impacts of small ($\sim1%$) fabrication variations in qubit inductance and critical current can be minimized by the application of a custom tuned flux offset to the CJJ structure of each qubit. This strategy allows for simultaneous synchronization of the qubit persistent current and tunnel splitting over a range of external bias parameters that is relevant for the implementation of an adiabatic quantum processor.

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